I love Franca and Thora. Thora is very strong and almost overpowering, so I could only picture it on a very strong, outgoing girl. However, Franca is a bit more flexible to me. It is mature, interesting, and quite elegant.

INTP Anthropologist Living in the centre of China, married to a Persian, and just enjoying a completely unpredictable life

Edith "Edie" Mirabelle - Edith is a great choice for what you are looking for but Mirabelle seems to frilly with it. Personally, I would consider Eleanor as the middle name here as Eleanor is very strong and the the EE initials make think of theoretical ee Cummings. Edith with a different middle is my first choice on your list.